CN103790547B - hanging packer device - Google Patents
hanging packer device Download PDFInfo
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- CN103790547B CN103790547B CN201410047571.0A CN201410047571A CN103790547B CN 103790547 B CN103790547 B CN 103790547B CN 201410047571 A CN201410047571 A CN 201410047571A CN 103790547 B CN103790547 B CN 103790547B
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Abstract
<b>the present invention relates to completion practice packer device technical field, be a kind of hanging packer device；It includes body, top connection and cylinder sleeve；Lower end outside at body is installed with lower contact, it is fixedly installed togather outside the lower inside of top connection and the upper end of body, lower end outside in top connection is fixedly connected with pawl cartridge by the first shear pin, being fixedly installed togather inside the lower outside of pawl cartridge and the upper end of cylinder sleeve, the lower end inside at cylinder sleeve is installed with interstage sleeve。Present configuration is reasonable and compact, easy to use, by body, pawl cartridge, cylinder sleeve, pawl set, floating seal set, upper slips, lower slips, packing element assembly and lower contact with the use of, it is achieved reliable seat hangs the purpose set,</b><b>there is reliability height and seal</b><b>packing effect</b><b>good feature, decreases potential safety hazard, facilitates operation, improve work efficiency, reduce production cost。</b>
Description
Technical field
The present invention relates to completion practice packer device technical field, be a kind of hanging packer device。
Background technology
Completion practice is the important technical of linking drilling well and oil producing operation, and meanwhile, completion is again the underground work of dangerous, therefore, the success or not of completion practice, will result directly in the success or failure of a bite well。Particularly current, along with shale gas, the deepening continuously of fine and close wet goods unconventionaloil pool field exploration, people are for carrying out the research of such Reservoir Development also in continuous reinforcement。For the exploitation of such oil-gas reservoir, carrying out pressure break completion is also requisite technological means。Being no matter the completion practice of hiding Oil/gas Well of the completion of conventional oil gas reservoir or unconventionaloil pool, an indispensable technological means is exactly the isolation operation utilizing packer to carry out shaft bottom reservoir。In conventional oil gas reservoir, the annular space that packer carries out in sleeve pipe is utilized to seal, sealing between bore hole reservoir and tubing string；Hide in completion practice at unconventionaloil pool, it is also required to utilize hanging packer to carry out annular space in sleeve pipe seal and isolation between different reservoir, therefore, hanging packer packer is requisite technological means in completion practice, and the importance of packer has some idea of。At present, the packer that Oil Field uses, easily occur sitting in advance and hang the severe phenomenon set。
Summary of the invention
The invention provides a kind of hanging packer device, overcome the deficiency of above-mentioned prior art, it can effectively solve existing packer easily occurs sitting in advance hanging the problem set。
The technical scheme is that and realized by following measures: a kind of hanging packer device, including body, top connection and cylinder sleeve；Lower end outside at body is installed with lower contact, it is fixedly installed togather outside the lower inside of top connection and the upper end of body, lower end outside in top connection is fixedly connected with pawl cartridge by the first shear pin, it is fixedly installed togather inside the lower outside of pawl cartridge and the upper end of cylinder sleeve, lower end inside at cylinder sleeve is installed with interstage sleeve, outer body between interstage sleeve and lower contact is fixedly connected with tapered sleeve and lower tapered sleeve respectively through the second shear pin interval, outer body between upper tapered sleeve and lower tapered sleeve is set with packing element assembly, outer body between interstage sleeve and upper tapered sleeve is provided with upper slips, outer body between lower tapered sleeve and lower contact is provided with lower slips, the lower inside of upper slips is inclined-plane wide at the top and narrow at the bottom, the upper outside of upper tapered sleeve is up-narrow and down-wide inclined-plane, the lower end inside of upper slips is pressed on the upper outside face of tapered sleeve, the upper inner of lower slips is up-narrow and down-wide inclined-plane, the lower outside of lower tapered sleeve is inclined-plane wide at the top and narrow at the bottom, it is pressed on the lower outside face of lower tapered sleeve inside the upper end of lower slips；Upper outside at body is installed with pawl set, outer body between pawl set and interstage sleeve is fixedly connected with floating seal set by the 3rd shear pin, form the first annular seal space between pawl set, body, floating seal set and cylinder sleeve, body has the inlet opening being connected with the first annular seal space of at least one。
Further optimization and/or improvements to foregoing invention technical scheme are presented herein below:
Above-mentioned pawl cartridge includes shear pin cylinder and two-way pawl cylinder；The upper inner of shear pin cylinder and the lower end outside of top connection are fixed together by the first shear pin, are fixedly installed togather inside the upper end of shear pin cylinder lower outside and cylinder sleeve；Axially distributed the first outer latch having crown down of outer body between pawl set and top connection, having pawl in crown first upward in the distribution of the inner side of two-way pawl cylinder, the two-way inner side of pawl cylinder and the upper outside of body are meshed together by pawl in the first outer latch and first；Inside middle portion at shear pin cylinder is distributed latch in have crown down second, in the upper outside distribution crown second outer pawl upward of two-way pawl cylinder, the inside middle portion of shear pin cylinder and the upper outside of two-way pawl cylinder are by second, latch and the second outer pawl mesh together；Form the second annular seal space between shear pin cylinder, two-way pawl cylinder, body, pawl set and cylinder sleeve, cylinder sleeve has the first relief hole communicated with the second annular seal space of at least one；Interstage sleeve is sleeved on outside the middle part of body, forms the 3rd annular seal space, have the second relief hole being connected with the 3rd annular seal space of at least one on cylinder sleeve between floating seal set, body, interstage sleeve and cylinder sleeve。
Above-mentioned packing element assembly includes extenal fixation ring, upper interior retainer ring, upper packing element baffle ring, packing element, lower rubber cylinder baffle ring, lower interior retainer ring and lower extenal fixation ring；Upper packing element baffle ring fix sulfuration outside the upper end of packing element, the outer body between upper tapered sleeve and upper packing element baffle ring be set with successively from top to bottom extenal fixation ring and in retainer ring；Lower rubber cylinder baffle ring is fixed and is vulcanized the lower end outside at packing element, and the outer body between lower rubber cylinder baffle ring and lower tapered sleeve is set with lower interior retainer ring and lower extenal fixation ring from top to bottom successively；Inside middle portion at packing element has a pushing out ring mounting groove, and the outside of corresponding body is fixed with a pushing out ring, and the fixing sulfuration of a pushing out ring is in a pushing out ring mounting groove。
The above-mentioned lower end flexible pawl of outer rim stationary distribution at pawl set, it is fixed with pawl platform in the lower end of each elastic claw, the top of pawl platform is up-narrow and down-wide inclined-plane, interior inclined-plane wide at the top and narrow at the bottom is had inside the cylinder sleeve of corresponding pawl platform position, being fixed with top cylinder in the upper end of floating seal set, the upper outside of pawl platform is pressed on the interior inclined-plane of cylinder sleeve by top cylinder；It is positioned at the outer body above and below pawl set and has semi-ring mounting groove respectively, the semi-ring that pair of matched is closed is installed in each semi-ring mounting groove, rubber ring mounting groove is circumferentially had outside two semi-rings matched, being installed with rubber ring in rubber ring mounting groove and be pressed in corresponding semi-ring mounting groove by the inner of two semi-rings matched, pawl set is installed between two pairs of semi-rings。
Female thread or female thread are arranged at the above-mentioned top in top connection；Female thread or female thread is had in the bottom of lower contact。
It is threadably secured between above-mentioned top connection and body and is installed together, it is threadably secured between lower contact and body and is installed together, the lower outside of two-way pawl cylinder and the lower end inside of shear pin cylinder are threadably secured and are installed together, shear pin cylinder and and cylinder sleeve be threadably secured and be installed together, interstage sleeve and cylinder sleeve are threadably secured and are installed together；Marked closely by the anti-rotation of at least one between top connection and body and be fixed together, shear pin cylinder and and cylinder sleeve between marked closely by the anti-rotation of at least one and to be fixed together, marked closely by the anti-rotation of at least one between lower contact and body and be fixed together。
The above-mentioned inner side and outer side at pawl set has mounting groove and pawl in pawl set to overlap outer mounting groove respectively, and in pawl overlaps, the upper and lower of mounting groove is separately installed with Sealing shield ring, and in pawl overlaps, the middle part of mounting groove is provided with sealing ring；The upper and lower overlapping outer mounting groove at pawl is separately installed with Sealing shield ring, and the middle part overlapping outer mounting groove at pawl is provided with sealing ring；Have mounting groove and floating seal in floating seal set to overlap outer mounting groove respectively in the inner side and outer side of floating seal set, in floating seal overlaps, the upper and lower of mounting groove is separately installed with Sealing shield ring, and in floating seal overlaps, the middle part of mounting groove is provided with sealing ring；The upper and lower overlapping outer mounting groove at floating seal is separately installed with Sealing shield ring, and the middle part overlapping outer mounting groove at floating seal is provided with sealing ring；Sealing ring is installed between top connection and body；Sealing ring is installed between lower contact and body。
Present configuration is reasonable and compact, easy to use, by body, pawl cartridge, cylinder sleeve, pawl set, floating seal set, upper slips, lower slips, packing element assembly and lower contact with the use of, realize reliable seat and hang the purpose set, have the advantages that reliability is high and seal pack is effective, decrease potential safety hazard, facilitate operation, improve work efficiency, reduce production cost。
Accompanying drawing explanation
The master that accompanying drawing 1 is the first half of the present invention looks half section structural representation。
The master that accompanying drawing 2 is the latter half of the present invention looks half section structural representation。
Coding in accompanying drawing is respectively as follows: 1 for body, 2 is top connection, 3 is cylinder sleeve, 4 is lower contact, 5 is the first shear pin, 6 is interstage sleeve, 7 is the second shear pin, 8 is upper tapered sleeve, 9 is lower tapered sleeve, 10 is upper slips, 11 is lower slips, 12 is pawl set, 13 is the 3rd shear pin, 14 is floating seal set, 15 is the first annular seal space, 16 is inlet opening, 17 is shear pin cylinder, 18 is two-way pawl cylinder, 19 is the second annular seal space, 20 is the first relief hole, 21 is the 3rd annular seal space, 22 is the second relief hole, 23 is upper extenal fixation ring, 24 is upper interior retainer ring, 25 is upper packing element baffle ring, 26 is packing element, 27 is lower rubber cylinder baffle ring, 28 is lower interior retainer ring, 29 is lower extenal fixation ring, 30 is a pushing out ring, 31 is elastic claw, 32 is pawl platform, 33 is top cylinder, 34 is semi-ring, 35 is rubber ring, 36 mark closely for anti-rotation, 37 is mounting groove in pawl set, 38 overlap outer mounting groove for pawl, 39 is Sealing shield ring, 40 is sealing ring, 41 is mounting groove in floating seal set, 42 overlap outer mounting groove for floating seal。
Detailed description of the invention
The present invention, not by the restriction of following embodiment, can determine specific embodiment according to technical scheme and practical situation。
In the present invention, for the ease of describing, the Butut mode that the description of the relative position relation of each parts is all according to Figure of description 1 is described, as: the position relationship of forward and backward, upper and lower, left and right etc. is based on what the Butut direction of Figure of description 1 was determined。
Below in conjunction with embodiment and accompanying drawing, the invention will be further described:
As shown in accompanying drawing 1,2, this hanging packer device includes body 1, top connection 2 and cylinder sleeve 3；Lower end outside at body 1 is installed with lower contact 4, it is fixedly installed togather outside the lower inside of top connection 2 and the upper end of body 1, lower end outside in top connection 2 is fixedly connected with pawl cartridge by the first shear pin 5, it is fixedly installed togather inside the lower outside of pawl cartridge and the upper end of cylinder sleeve 3, lower end inside at cylinder sleeve 3 is installed with interstage sleeve 6, it is fixedly connected with tapered sleeve 8 and lower tapered sleeve 9 respectively through the second shear pin 7 interval outside body 1 between interstage sleeve 6 and lower contact 4, body 1 outer sheath between upper tapered sleeve 8 and lower tapered sleeve 9 is equipped with packing element assembly, outside body 1 between interstage sleeve 6 and upper tapered sleeve 8, upper slips 10 is installed, outside body 1 between lower tapered sleeve 9 and lower contact 4, lower slips 11 is installed, the lower inside of upper slips 10 is inclined-plane wide at the top and narrow at the bottom, the upper outside of upper tapered sleeve 8 is up-narrow and down-wide inclined-plane, the lower end inside of upper slips 10 is pressed on the upper outside face of tapered sleeve 8, the upper inner of lower slips 11 is up-narrow and down-wide inclined-plane, the lower outside of lower tapered sleeve 9 is inclined-plane wide at the top and narrow at the bottom, it is pressed on inside the upper end of lower slips 11 on the lower outside face of lower tapered sleeve 9；Upper outside at body 1 is installed with pawl set 12, overlap at pawl and be fixedly connected with floating seal set 14 by the 3rd shear pin 13 outside the body 1 between 12 and interstage sleeve 6, pawl set 12, body 1, floating seal overlap and form the first annular seal space 15 between 14 and cylinder sleeve 3, have the inlet opening 16 being connected with the first annular seal space 15 of at least one on body 1。
According to actual needs, above-mentioned hanging packer device can be made further optimization and/or improvements:
As shown in accompanying drawing 1,2, pawl cartridge includes shear pin cylinder 17 and two-way pawl cylinder 18；The upper inner of shear pin cylinder 17 and the lower end outside of top connection 2 are fixed together by the first shear pin 5, are fixedly installed togather inside the upper end of shear pin cylinder 17 lower outside and cylinder sleeve 3；The body 1 overlapped between 12 and top connection 2 at pawl is distributed the first outer latch having crown down axially outside, having pawl in crown first upward in the distribution of the inner side of two-way pawl cylinder 18, the inner side of two-way pawl cylinder 18 and the upper outside of body 1 are meshed together by pawl in the first outer latch and first；Inside middle portion at shear pin cylinder 17 is distributed latch in have crown down second, in the upper outside distribution crown second outer pawl upward of two-way pawl cylinder 18, the inside middle portion of shear pin cylinder 17 and the upper outside of two-way pawl cylinder 18 are by second, latch and the second outer pawl mesh together；Form the second annular seal space 19 between shear pin cylinder 17, two-way pawl cylinder 18, body 1, pawl set 12 and cylinder sleeve 3, cylinder sleeve 3 has the first relief hole 20 communicated with the second annular seal space 19 of at least one；Interstage sleeve 6 is sleeved on outside the middle part of body 1, floating seal set 14, body 1, formation the 3rd annular seal space 21 between interstage sleeve 6 and cylinder sleeve 3, has the second relief hole 22 being connected with the 3rd annular seal space 21 of at least one on cylinder sleeve 3。So, pawl cartridge plays non-return effect, can only be descending, it is impossible to up；After first relief hole 20 prevents interstage sleeve 6, cylinder sleeve 3, shear pin cylinder 17 descending together with two-way pawl cylinder 18, the second annular seal space 19 builds the pressure；Second relief hole 22 prevent floating seal overlap 14 descending after the 3rd annular seal spaces 21 build the pressure。
As shown in accompanying drawing 1,2, packing element assembly includes extenal fixation ring 23, upper interior retainer ring 24, upper packing element baffle ring 25, packing element 26, lower rubber cylinder baffle ring 27, lower interior retainer ring 28 and lower extenal fixation ring 29；The fixing sulfuration of upper packing element baffle ring 25 outside the upper end of packing element 26, on being set with successively from top to bottom outside the body 1 between upper tapered sleeve 8 and upper packing element baffle ring 25 extenal fixation ring 23 and in retainer ring 24；The fixing sulfuration of lower rubber cylinder baffle ring 27, at the lower end outside of packing element 26, is set with lower interior retainer ring 28 and lower extenal fixation ring 29 from top to bottom successively outside the body 1 between lower rubber cylinder baffle ring 27 and lower tapered sleeve 9；Inside middle portion at packing element 26 has a pushing out ring mounting groove, and the outside of corresponding body 1 is fixed with a pushing out ring 30, and the fixing sulfuration of a pushing out ring 30 is in a pushing out ring mounting groove。So, upper extenal fixation ring 23, upper interior retainer ring 24, upper packing element baffle ring 25, lower rubber cylinder baffle ring 27, lower interior retainer ring 28 and lower extenal fixation ring 29 are easy to better protection and extruding packing element 26。Upper extenal fixation ring 23, upper interior retainer ring 24, lower interior retainer ring 28 and lower extenal fixation ring 29 are split ring, upper extenal fixation ring 23 and upper interior retainer ring 24 are agreed with by step and are installed together, and lower interior retainer ring 28 and lower extenal fixation ring 29 are agreed with by step and be installed together。
As shown in accompanying drawing 1,2, the flexible pawl 31 of lower end outer rim stationary distribution of 12 is overlapped at pawl, it is fixed with pawl platform 32 in the lower end of each elastic claw 31, the top of pawl platform 32 is up-narrow and down-wide inclined-plane, interior inclined-plane wide at the top and narrow at the bottom is had inside the cylinder sleeve 3 of corresponding pawl platform 32 position, the upper end overlapping 14 at floating seal is fixed with top cylinder 33, and the upper outside of pawl platform 32 is pressed on the interior inclined-plane of cylinder sleeve 3 by top cylinder 33；It is positioned at outside the body 1 above and below pawl set 12 and has semi-ring mounting groove respectively, the semi-ring 34 that pair of matched is closed is installed in each semi-ring mounting groove, rubber ring mounting groove is circumferentially had outside two semi-rings 34 matched, being installed with rubber ring 35 in rubber ring mounting groove and be pressed in corresponding semi-ring mounting groove by the inner of two semi-rings 34 matched, pawl set 12 is installed between two pairs of semi-rings 34。So, pawl platform 32 is easy to better cylinder sleeve 3 be played axial limiting effect。
As shown in accompanying drawing 1,2, there are female thread or female thread on the top of top connection 2；Female thread or female thread is had in the bottom of lower contact 4。So, it is simple to top connection 2, lower contact 4 installation and removal。
As shown in accompanying drawing 1,2, it is threadably secured between top connection 2 and body 1 and is installed together, it is threadably secured between lower contact 4 and body 1 and is installed together, the lower outside of two-way pawl cylinder 18 and the lower end inside of shear pin cylinder 17 are threadably secured and are installed together, shear pin cylinder 17 and and cylinder sleeve 3 be threadably secured and be installed together, interstage sleeve 6 and cylinder sleeve 3 are threadably secured and are installed together；Mark closely 36 by the anti-rotation of at least one between top connection 2 and body 1 to be fixed together, shear pin cylinder 17 and and cylinder sleeve 3 between mark closely 36 by the anti-rotation of at least one and be fixed together, mark closely 36 by the anti-rotation of at least one between lower contact 4 and body 1 and be fixed together。So, it is easily installed by screw thread and dismantles；Anti-rotation is marked closely 36 and is played better fixing and anti-rotation effect。
As shown in accompanying drawing 1,2, the inner side and outer side overlapping 12 at pawl has mounting groove 37 and pawl in pawl set to overlap outer mounting groove 38 respectively, and in pawl overlaps, the upper and lower of mounting groove 37 is separately installed with Sealing shield ring 39, and in pawl overlaps, the middle part of mounting groove 37 is provided with sealing ring 40；The upper and lower overlapping outer mounting groove 38 at pawl is separately installed with Sealing shield ring 39, and the middle part overlapping outer mounting groove 38 at pawl is provided with sealing ring 40；The inner side and outer side overlapping 14 at floating seal has mounting groove 41 and floating seal in floating seal set to overlap outer mounting groove 42 respectively, in floating seal overlaps, the upper and lower of mounting groove 41 is separately installed with Sealing shield ring 39, and in floating seal overlaps, the middle part of mounting groove 41 is provided with sealing ring 40；The upper and lower overlapping outer mounting groove 42 at floating seal is separately installed with Sealing shield ring 39, and the middle part overlapping outer mounting groove 42 at floating seal is provided with sealing ring 40；Sealing ring 40 is installed between top connection 2 and body 1；Sealing ring 40 is installed between lower contact 4 and body 1。So, sealing ring 40 is easy to better play the effect of sealing。
Above technical characteristic constitutes highly preferred embodiment of the present invention, and it has stronger adaptability and best implementation result, can increase and decrease non-essential technical characteristic according to actual needs, meet the demand of different situations。
The use procedure of the embodiment of the present invention: first pitching builds the pressure below inlet opening 16, liquid enters in the inner chamber of body 1, enter in the first annular seal space 15 by inlet opening 16, build the pressure and make the pressure in the first annular seal space 15 increase, the 3rd shear pin 13 that floating seal set 14 and body 1 connect is cut off, liquid-driving floating seal in first annular seal space 15 overlaps 14 descending, and the top cylinder 33 that floating seal overlaps on 14 descending rear floating seals sets 14 departs from pawl platform 32, and the elastic claw 31 on pawl set 12 shrinks；When floating seal set 14 comes downwards to the upper surface of interstage sleeve 6, extruding interstage sleeve 6 makes the first shear pin 5 that shear pin cylinder 17 and top connection 2 connect cut off, interstage sleeve 6, cylinder sleeve 3, shear pin cylinder 17 is descending together with two-way pawl cylinder 18, interstage sleeve 6 extrudes upper slips 10, the upper tapered sleeve 8 of upper slips 10 extruding, the second shear pin 7 that tapered sleeve 8 and body 1 connect is made to cut off, upper tapered sleeve 8 extrudes packing element assembly and lower tapered sleeve 9, the second shear pin 7 that lower tapered sleeve 9 and body 1 connect is made to cut off, continue extruding so that packing element 26 expansion sets, upper slips 10 and lower slips 11 are sat and are hung, reach not build the pressure and do not sit extension and set, build the pressure to sit smoothly and hang the purpose set, avoid the occurrence of premature setting and sit the situation generation hung, make underground work safe and reliable, thus ensureing effective enforcement of downhole completion。
Claims (33)
1. a hanging packer device, it is characterised in that include body, top connection and cylinder sleeve；Lower end outside at body is installed with lower contact, it is fixedly installed togather outside the lower inside of top connection and the upper end of body, lower end outside in top connection is fixedly connected with pawl cartridge by the first shear pin, it is fixedly installed togather inside the lower outside of pawl cartridge and the upper end of cylinder sleeve, lower end inside at cylinder sleeve is installed with interstage sleeve, outer body between interstage sleeve and lower contact is fixedly connected with tapered sleeve and lower tapered sleeve respectively through the second shear pin interval, outer body between upper tapered sleeve and lower tapered sleeve is set with packing element assembly, outer body between interstage sleeve and upper tapered sleeve is provided with upper slips, outer body between lower tapered sleeve and lower contact is provided with lower slips, the lower inside of upper slips is inclined-plane wide at the top and narrow at the bottom, the upper outside of upper tapered sleeve is up-narrow and down-wide inclined-plane, the lower end inside of upper slips is pressed on the upper outside face of tapered sleeve, the upper inner of lower slips is up-narrow and down-wide inclined-plane, the lower outside of lower tapered sleeve is inclined-plane wide at the top and narrow at the bottom, it is pressed on the lower outside face of lower tapered sleeve inside the upper end of lower slips；Upper outside at body is installed with pawl set, outer body between pawl set and interstage sleeve is fixedly connected with floating seal set by the 3rd shear pin, form the first annular seal space between pawl set, body, floating seal set and cylinder sleeve, body has the inlet opening being connected with the first annular seal space of at least one。
2. hanging packer device according to claim 1, it is characterised in that pawl cartridge includes shear pin cylinder and two-way pawl cylinder；The upper inner of shear pin cylinder and the lower end outside of top connection are fixed together by the first shear pin, are fixedly installed togather inside the upper end of shear pin cylinder lower outside and cylinder sleeve；Axially distributed the first outer latch having crown down of outer body between pawl set and top connection, having pawl in crown first upward in the distribution of the inner side of two-way pawl cylinder, the two-way inner side of pawl cylinder and the upper outside of body are meshed together by pawl in the first outer latch and first；Inside middle portion at shear pin cylinder is distributed latch in have crown down second, in the upper outside distribution crown second outer pawl upward of two-way pawl cylinder, the inside middle portion of shear pin cylinder and the upper outside of two-way pawl cylinder are by second, latch and the second outer pawl mesh together；Form the second annular seal space between shear pin cylinder, two-way pawl cylinder, body, pawl set and cylinder sleeve, cylinder sleeve has the first relief hole communicated with the second annular seal space of at least one；Interstage sleeve is sleeved on outside the middle part of body, forms the 3rd annular seal space, have the second relief hole being connected with the 3rd annular seal space of at least one on cylinder sleeve between floating seal set, body, interstage sleeve and cylinder sleeve。
3. hanging packer device according to claim 1 and 2, it is characterised in that packing element assembly includes extenal fixation ring, upper interior retainer ring, upper packing element baffle ring, packing element, lower rubber cylinder baffle ring, lower interior retainer ring and lower extenal fixation ring；Upper packing element baffle ring fix sulfuration outside the upper end of packing element, the outer body between upper tapered sleeve and upper packing element baffle ring be set with successively from top to bottom extenal fixation ring and in retainer ring；Lower rubber cylinder baffle ring is fixed and is vulcanized the lower end outside at packing element, and the outer body between lower rubber cylinder baffle ring and lower tapered sleeve is set with lower interior retainer ring and lower extenal fixation ring from top to bottom successively；Inside middle portion at packing element has a pushing out ring mounting groove, and the outside of corresponding body is fixed with a pushing out ring, and the fixing sulfuration of a pushing out ring is in a pushing out ring mounting groove。
4. hanging packer device according to claim 1 and 2, it is characterized in that the lower end flexible pawl of outer rim stationary distribution that pawl overlaps, it is fixed with pawl platform in the lower end of each elastic claw, the top of pawl platform is up-narrow and down-wide inclined-plane, interior inclined-plane wide at the top and narrow at the bottom is had inside the cylinder sleeve of corresponding pawl platform position, being fixed with top cylinder in the upper end of floating seal set, the upper outside of pawl platform is pressed on the interior inclined-plane of cylinder sleeve by top cylinder；It is positioned at the outer body above and below pawl set and has semi-ring mounting groove respectively, the semi-ring that pair of matched is closed is installed in each semi-ring mounting groove, rubber ring mounting groove is circumferentially had outside two semi-rings matched, being installed with rubber ring in rubber ring mounting groove and be pressed in corresponding semi-ring mounting groove by the inner of two semi-rings matched, pawl set is installed between two pairs of semi-rings。
5. hanging packer device according to claim 3, it is characterized in that the lower end flexible pawl of outer rim stationary distribution that pawl overlaps, it is fixed with pawl platform in the lower end of each elastic claw, the top of pawl platform is up-narrow and down-wide inclined-plane, interior inclined-plane wide at the top and narrow at the bottom is had inside the cylinder sleeve of corresponding pawl platform position, being fixed with top cylinder in the upper end of floating seal set, the upper outside of pawl platform is pressed on the interior inclined-plane of cylinder sleeve by top cylinder；It is positioned at the outer body above and below pawl set and has semi-ring mounting groove respectively, the semi-ring that pair of matched is closed is installed in each semi-ring mounting groove, rubber ring mounting groove is circumferentially had outside two semi-rings matched, being installed with rubber ring in rubber ring mounting groove and be pressed in corresponding semi-ring mounting groove by the inner of two semi-rings matched, pawl set is installed between two pairs of semi-rings。
6. hanging packer device according to claim 1 and 2, it is characterised in that female thread or female thread are arranged at the top of top connection；Female thread or female thread is had in the bottom of lower contact。
7. hanging packer device according to claim 3, it is characterised in that female thread or female thread are arranged at the top of top connection；Female thread or female thread is had in the bottom of lower contact。
8. hanging packer device according to claim 4, it is characterised in that female thread or female thread are arranged at the top of top connection；Female thread or female thread is had in the bottom of lower contact。
9. hanging packer device according to claim 5, it is characterised in that female thread or female thread are arranged at the top of top connection；Female thread or female thread is had in the bottom of lower contact。
10. hanging packer device according to claim 2, it is characterized in that being threadably secured between top connection and body being installed together, it is threadably secured between lower contact and body and is installed together, the lower outside of two-way pawl cylinder and the lower end inside of shear pin cylinder are threadably secured and are installed together, shear pin cylinder and and cylinder sleeve be threadably secured and be installed together, interstage sleeve and cylinder sleeve are threadably secured and are installed together；Marked closely by the anti-rotation of at least one between top connection and body and be fixed together, shear pin cylinder and and cylinder sleeve between marked closely by the anti-rotation of at least one and to be fixed together, marked closely by the anti-rotation of at least one between lower contact and body and be fixed together。
11. hanging packer device according to claim 3, it is characterized in that being threadably secured between top connection and body being installed together, it is threadably secured between lower contact and body and is installed together, the lower outside of two-way pawl cylinder and the lower end inside of shear pin cylinder are threadably secured and are installed together, shear pin cylinder and and cylinder sleeve be threadably secured and be installed together, interstage sleeve and cylinder sleeve are threadably secured and are installed together；Marked closely by the anti-rotation of at least one between top connection and body and be fixed together, shear pin cylinder and and cylinder sleeve between marked closely by the anti-rotation of at least one and to be fixed together, marked closely by the anti-rotation of at least one between lower contact and body and be fixed together。
12. hanging packer device according to claim 4, it is characterized in that being threadably secured between top connection and body being installed together, it is threadably secured between lower contact and body and is installed together, the lower outside of two-way pawl cylinder and the lower end inside of shear pin cylinder are threadably secured and are installed together, shear pin cylinder and and cylinder sleeve be threadably secured and be installed together, interstage sleeve and cylinder sleeve are threadably secured and are installed together；Marked closely by the anti-rotation of at least one between top connection and body and be fixed together, shear pin cylinder and and cylinder sleeve between marked closely by the anti-rotation of at least one and to be fixed together, marked closely by the anti-rotation of at least one between lower contact and body and be fixed together。
13. hanging packer device according to claim 5, it is characterized in that being threadably secured between top connection and body being installed together, it is threadably secured between lower contact and body and is installed together, the lower outside of two-way pawl cylinder and the lower end inside of shear pin cylinder are threadably secured and are installed together, shear pin cylinder and and cylinder sleeve be threadably secured and be installed together, interstage sleeve and cylinder sleeve are threadably secured and are installed together；Marked closely by the anti-rotation of at least one between top connection and body and be fixed together, shear pin cylinder and and cylinder sleeve between marked closely by the anti-rotation of at least one and to be fixed together, marked closely by the anti-rotation of at least one between lower contact and body and be fixed together。
14. hanging packer device according to claim 6, it is characterized in that being threadably secured between top connection and body being installed together, it is threadably secured between lower contact and body and is installed together, the lower outside of two-way pawl cylinder and the lower end inside of shear pin cylinder are threadably secured and are installed together, shear pin cylinder and and cylinder sleeve be threadably secured and be installed together, interstage sleeve and cylinder sleeve are threadably secured and are installed together；Marked closely by the anti-rotation of at least one between top connection and body and be fixed together, shear pin cylinder and and cylinder sleeve between marked closely by the anti-rotation of at least one and to be fixed together, marked closely by the anti-rotation of at least one between lower contact and body and be fixed together。
15. hanging packer device according to claim 7, it is characterized in that being threadably secured between top connection and body being installed together, it is threadably secured between lower contact and body and is installed together, the lower outside of two-way pawl cylinder and the lower end inside of shear pin cylinder are threadably secured and are installed together, shear pin cylinder and and cylinder sleeve be threadably secured and be installed together, interstage sleeve and cylinder sleeve are threadably secured and are installed together；Marked closely by the anti-rotation of at least one between top connection and body and be fixed together, shear pin cylinder and and cylinder sleeve between marked closely by the anti-rotation of at least one and to be fixed together, marked closely by the anti-rotation of at least one between lower contact and body and be fixed together。
16. hanging packer device according to claim 8, it is characterized in that being threadably secured between top connection and body being installed together, it is threadably secured between lower contact and body and is installed together, the lower outside of two-way pawl cylinder and the lower end inside of shear pin cylinder are threadably secured and are installed together, shear pin cylinder and and cylinder sleeve be threadably secured and be installed together, interstage sleeve and cylinder sleeve are threadably secured and are installed together；Marked closely by the anti-rotation of at least one between top connection and body and be fixed together, shear pin cylinder and and cylinder sleeve between marked closely by the anti-rotation of at least one and to be fixed together, marked closely by the anti-rotation of at least one between lower contact and body and be fixed together。
17. hanging packer device according to claim 9, it is characterized in that being threadably secured between top connection and body being installed together, it is threadably secured between lower contact and body and is installed together, the lower outside of two-way pawl cylinder and the lower end inside of shear pin cylinder are threadably secured and are installed together, shear pin cylinder and and cylinder sleeve be threadably secured and be installed together, interstage sleeve and cylinder sleeve are threadably secured and are installed together；Marked closely by the anti-rotation of at least one between top connection and body and be fixed together, shear pin cylinder and and cylinder sleeve between marked closely by the anti-rotation of at least one and to be fixed together, marked closely by the anti-rotation of at least one between lower contact and body and be fixed together。
18. hanging packer device according to claim 1 and 2, it is characterized in that the inner side and outer side that pawl overlaps has mounting groove and pawl in pawl set to overlap outer mounting groove respectively, in pawl overlaps, the upper and lower of mounting groove is separately installed with Sealing shield ring, and in pawl overlaps, the middle part of mounting groove is provided with sealing ring；The upper and lower overlapping outer mounting groove at pawl is separately installed with Sealing shield ring, and the middle part overlapping outer mounting groove at pawl is provided with sealing ring；Have mounting groove and floating seal in floating seal set to overlap outer mounting groove respectively in the inner side and outer side of floating seal set, in floating seal overlaps, the upper and lower of mounting groove is separately installed with Sealing shield ring, and in floating seal overlaps, the middle part of mounting groove is provided with sealing ring；The upper and lower overlapping outer mounting groove at floating seal is separately installed with Sealing shield ring, and the middle part overlapping outer mounting groove at floating seal is provided with sealing ring；Sealing ring is installed between top connection and body；Sealing ring is installed between lower contact and body。
19. hanging packer device according to claim 3, it is characterized in that the inner side and outer side that pawl overlaps has mounting groove and pawl in pawl set to overlap outer mounting groove respectively, in pawl overlaps, the upper and lower of mounting groove is separately installed with Sealing shield ring, and in pawl overlaps, the middle part of mounting groove is provided with sealing ring；The upper and lower overlapping outer mounting groove at pawl is separately installed with Sealing shield ring, and the middle part overlapping outer mounting groove at pawl is provided with sealing ring；Have mounting groove and floating seal in floating seal set to overlap outer mounting groove respectively in the inner side and outer side of floating seal set, in floating seal overlaps, the upper and lower of mounting groove is separately installed with Sealing shield ring, and in floating seal overlaps, the middle part of mounting groove is provided with sealing ring；The upper and lower overlapping outer mounting groove at floating seal is separately installed with Sealing shield ring, and the middle part overlapping outer mounting groove at floating seal is provided with sealing ring；Sealing ring is installed between top connection and body；Sealing ring is installed between lower contact and body。
20. hanging packer device according to claim 4, it is characterized in that the inner side and outer side that pawl overlaps has mounting groove and pawl in pawl set to overlap outer mounting groove respectively, in pawl overlaps, the upper and lower of mounting groove is separately installed with Sealing shield ring, and in pawl overlaps, the middle part of mounting groove is provided with sealing ring；The upper and lower overlapping outer mounting groove at pawl is separately installed with Sealing shield ring, and the middle part overlapping outer mounting groove at pawl is provided with sealing ring；Have mounting groove and floating seal in floating seal set to overlap outer mounting groove respectively in the inner side and outer side of floating seal set, in floating seal overlaps, the upper and lower of mounting groove is separately installed with Sealing shield ring, and in floating seal overlaps, the middle part of mounting groove is provided with sealing ring；The upper and lower overlapping outer mounting groove at floating seal is separately installed with Sealing shield ring, and the middle part overlapping outer mounting groove at floating seal is provided with sealing ring；Sealing ring is installed between top connection and body；Sealing ring is installed between lower contact and body。
21. hanging packer device according to claim 5, it is characterized in that the inner side and outer side that pawl overlaps has mounting groove and pawl in pawl set to overlap outer mounting groove respectively, in pawl overlaps, the upper and lower of mounting groove is separately installed with Sealing shield ring, and in pawl overlaps, the middle part of mounting groove is provided with sealing ring；The upper and lower overlapping outer mounting groove at pawl is separately installed with Sealing shield ring, and the middle part overlapping outer mounting groove at pawl is provided with sealing ring；Have mounting groove and floating seal in floating seal set to overlap outer mounting groove respectively in the inner side and outer side of floating seal set, in floating seal overlaps, the upper and lower of mounting groove is separately installed with Sealing shield ring, and in floating seal overlaps, the middle part of mounting groove is provided with sealing ring；The upper and lower overlapping outer mounting groove at floating seal is separately installed with Sealing shield ring, and the middle part overlapping outer mounting groove at floating seal is provided with sealing ring；Sealing ring is installed between top connection and body；Sealing ring is installed between lower contact and body。
22. hanging packer device according to claim 6, it is characterized in that the inner side and outer side that pawl overlaps has mounting groove and pawl in pawl set to overlap outer mounting groove respectively, in pawl overlaps, the upper and lower of mounting groove is separately installed with Sealing shield ring, and in pawl overlaps, the middle part of mounting groove is provided with sealing ring；The upper and lower overlapping outer mounting groove at pawl is separately installed with Sealing shield ring, and the middle part overlapping outer mounting groove at pawl is provided with sealing ring；Have mounting groove and floating seal in floating seal set to overlap outer mounting groove respectively in the inner side and outer side of floating seal set, in floating seal overlaps, the upper and lower of mounting groove is separately installed with Sealing shield ring, and in floating seal overlaps, the middle part of mounting groove is provided with sealing ring；The upper and lower overlapping outer mounting groove at floating seal is separately installed with Sealing shield ring, and the middle part overlapping outer mounting groove at floating seal is provided with sealing ring；Sealing ring is installed between top connection and body；Sealing ring is installed between lower contact and body。
23. hanging packer device according to claim 7, it is characterized in that the inner side and outer side that pawl overlaps has mounting groove and pawl in pawl set to overlap outer mounting groove respectively, in pawl overlaps, the upper and lower of mounting groove is separately installed with Sealing shield ring, and in pawl overlaps, the middle part of mounting groove is provided with sealing ring；The upper and lower overlapping outer mounting groove at pawl is separately installed with Sealing shield ring, and the middle part overlapping outer mounting groove at pawl is provided with sealing ring；Have mounting groove and floating seal in floating seal set to overlap outer mounting groove respectively in the inner side and outer side of floating seal set, in floating seal overlaps, the upper and lower of mounting groove is separately installed with Sealing shield ring, and in floating seal overlaps, the middle part of mounting groove is provided with sealing ring；The upper and lower overlapping outer mounting groove at floating seal is separately installed with Sealing shield ring, and the middle part overlapping outer mounting groove at floating seal is provided with sealing ring；Sealing ring is installed between top connection and body；Sealing ring is installed between lower contact and body。
24. hanging packer device according to claim 8, it is characterized in that the inner side and outer side that pawl overlaps has mounting groove and pawl in pawl set to overlap outer mounting groove respectively, in pawl overlaps, the upper and lower of mounting groove is separately installed with Sealing shield ring, and in pawl overlaps, the middle part of mounting groove is provided with sealing ring；The upper and lower overlapping outer mounting groove at pawl is separately installed with Sealing shield ring, and the middle part overlapping outer mounting groove at pawl is provided with sealing ring；Have mounting groove and floating seal in floating seal set to overlap outer mounting groove respectively in the inner side and outer side of floating seal set, in floating seal overlaps, the upper and lower of mounting groove is separately installed with Sealing shield ring, and in floating seal overlaps, the middle part of mounting groove is provided with sealing ring；The upper and lower overlapping outer mounting groove at floating seal is separately installed with Sealing shield ring, and the middle part overlapping outer mounting groove at floating seal is provided with sealing ring；Sealing ring is installed between top connection and body；Sealing ring is installed between lower contact and body。
25. hanging packer device according to claim 9, it is characterized in that the inner side and outer side that pawl overlaps has mounting groove and pawl in pawl set to overlap outer mounting groove respectively, in pawl overlaps, the upper and lower of mounting groove is separately installed with Sealing shield ring, and in pawl overlaps, the middle part of mounting groove is provided with sealing ring；The upper and lower overlapping outer mounting groove at pawl is separately installed with Sealing shield ring, and the middle part overlapping outer mounting groove at pawl is provided with sealing ring；Have mounting groove and floating seal in floating seal set to overlap outer mounting groove respectively in the inner side and outer side of floating seal set, in floating seal overlaps, the upper and lower of mounting groove is separately installed with Sealing shield ring, and in floating seal overlaps, the middle part of mounting groove is provided with sealing ring；The upper and lower overlapping outer mounting groove at floating seal is separately installed with Sealing shield ring, and the middle part overlapping outer mounting groove at floating seal is provided with sealing ring；Sealing ring is installed between top connection and body；Sealing ring is installed between lower contact and body。
26. hanging packer device according to claim 10, it is characterized in that the inner side and outer side that pawl overlaps has mounting groove and pawl in pawl set to overlap outer mounting groove respectively, in pawl overlaps, the upper and lower of mounting groove is separately installed with Sealing shield ring, and in pawl overlaps, the middle part of mounting groove is provided with sealing ring；The upper and lower overlapping outer mounting groove at pawl is separately installed with Sealing shield ring, and the middle part overlapping outer mounting groove at pawl is provided with sealing ring；Have mounting groove and floating seal in floating seal set to overlap outer mounting groove respectively in the inner side and outer side of floating seal set, in floating seal overlaps, the upper and lower of mounting groove is separately installed with Sealing shield ring, and in floating seal overlaps, the middle part of mounting groove is provided with sealing ring；The upper and lower overlapping outer mounting groove at floating seal is separately installed with Sealing shield ring, and the middle part overlapping outer mounting groove at floating seal is provided with sealing ring；Sealing ring is installed between top connection and body；Sealing ring is installed between lower contact and body。
27. hanging packer device according to claim 11, it is characterized in that the inner side and outer side that pawl overlaps has mounting groove and pawl in pawl set to overlap outer mounting groove respectively, in pawl overlaps, the upper and lower of mounting groove is separately installed with Sealing shield ring, and in pawl overlaps, the middle part of mounting groove is provided with sealing ring；The upper and lower overlapping outer mounting groove at pawl is separately installed with Sealing shield ring, and the middle part overlapping outer mounting groove at pawl is provided with sealing ring；Have mounting groove and floating seal in floating seal set to overlap outer mounting groove respectively in the inner side and outer side of floating seal set, in floating seal overlaps, the upper and lower of mounting groove is separately installed with Sealing shield ring, and in floating seal overlaps, the middle part of mounting groove is provided with sealing ring；The upper and lower overlapping outer mounting groove at floating seal is separately installed with Sealing shield ring, and the middle part overlapping outer mounting groove at floating seal is provided with sealing ring；Sealing ring is installed between top connection and body；Sealing ring is installed between lower contact and body。
28. hanging packer device according to claim 12, it is characterized in that the inner side and outer side that pawl overlaps has mounting groove and pawl in pawl set to overlap outer mounting groove respectively, in pawl overlaps, the upper and lower of mounting groove is separately installed with Sealing shield ring, and in pawl overlaps, the middle part of mounting groove is provided with sealing ring；The upper and lower overlapping outer mounting groove at pawl is separately installed with Sealing shield ring, and the middle part overlapping outer mounting groove at pawl is provided with sealing ring；Have mounting groove and floating seal in floating seal set to overlap outer mounting groove respectively in the inner side and outer side of floating seal set, in floating seal overlaps, the upper and lower of mounting groove is separately installed with Sealing shield ring, and in floating seal overlaps, the middle part of mounting groove is provided with sealing ring；The upper and lower overlapping outer mounting groove at floating seal is separately installed with Sealing shield ring, and the middle part overlapping outer mounting groove at floating seal is provided with sealing ring；Sealing ring is installed between top connection and body；Sealing ring is installed between lower contact and body。
29. hanging packer device according to claim 13, it is characterized in that the inner side and outer side that pawl overlaps has mounting groove and pawl in pawl set to overlap outer mounting groove respectively, in pawl overlaps, the upper and lower of mounting groove is separately installed with Sealing shield ring, and in pawl overlaps, the middle part of mounting groove is provided with sealing ring；The upper and lower overlapping outer mounting groove at pawl is separately installed with Sealing shield ring, and the middle part overlapping outer mounting groove at pawl is provided with sealing ring；Have mounting groove and floating seal in floating seal set to overlap outer mounting groove respectively in the inner side and outer side of floating seal set, in floating seal overlaps, the upper and lower of mounting groove is separately installed with Sealing shield ring, and in floating seal overlaps, the middle part of mounting groove is provided with sealing ring；The upper and lower overlapping outer mounting groove at floating seal is separately installed with Sealing shield ring, and the middle part overlapping outer mounting groove at floating seal is provided with sealing ring；Sealing ring is installed between top connection and body；Sealing ring is installed between lower contact and body。
30. hanging packer device according to claim 14, it is characterized in that the inner side and outer side that pawl overlaps has mounting groove and pawl in pawl set to overlap outer mounting groove respectively, in pawl overlaps, the upper and lower of mounting groove is separately installed with Sealing shield ring, and in pawl overlaps, the middle part of mounting groove is provided with sealing ring；The upper and lower overlapping outer mounting groove at pawl is separately installed with Sealing shield ring, and the middle part overlapping outer mounting groove at pawl is provided with sealing ring；Have mounting groove and floating seal in floating seal set to overlap outer mounting groove respectively in the inner side and outer side of floating seal set, in floating seal overlaps, the upper and lower of mounting groove is separately installed with Sealing shield ring, and in floating seal overlaps, the middle part of mounting groove is provided with sealing ring；The upper and lower overlapping outer mounting groove at floating seal is separately installed with Sealing shield ring, and the middle part overlapping outer mounting groove at floating seal is provided with sealing ring；Sealing ring is installed between top connection and body；Sealing ring is installed between lower contact and body。
31. hanging packer device according to claim 15, it is characterized in that the inner side and outer side that pawl overlaps has mounting groove and pawl in pawl set to overlap outer mounting groove respectively, in pawl overlaps, the upper and lower of mounting groove is separately installed with Sealing shield ring, and in pawl overlaps, the middle part of mounting groove is provided with sealing ring；The upper and lower overlapping outer mounting groove at pawl is separately installed with Sealing shield ring, and the middle part overlapping outer mounting groove at pawl is provided with sealing ring；Have mounting groove and floating seal in floating seal set to overlap outer mounting groove respectively in the inner side and outer side of floating seal set, in floating seal overlaps, the upper and lower of mounting groove is separately installed with Sealing shield ring, and in floating seal overlaps, the middle part of mounting groove is provided with sealing ring；The upper and lower overlapping outer mounting groove at floating seal is separately installed with Sealing shield ring, and the middle part overlapping outer mounting groove at floating seal is provided with sealing ring；Sealing ring is installed between top connection and body；Sealing ring is installed between lower contact and body。
32. hanging packer device according to claim 16, it is characterized in that the inner side and outer side that pawl overlaps has mounting groove and pawl in pawl set to overlap outer mounting groove respectively, in pawl overlaps, the upper and lower of mounting groove is separately installed with Sealing shield ring, and in pawl overlaps, the middle part of mounting groove is provided with sealing ring；The upper and lower overlapping outer mounting groove at pawl is separately installed with Sealing shield ring, and the middle part overlapping outer mounting groove at pawl is provided with sealing ring；Have mounting groove and floating seal in floating seal set to overlap outer mounting groove respectively in the inner side and outer side of floating seal set, in floating seal overlaps, the upper and lower of mounting groove is separately installed with Sealing shield ring, and in floating seal overlaps, the middle part of mounting groove is provided with sealing ring；The upper and lower overlapping outer mounting groove at floating seal is separately installed with Sealing shield ring, and the middle part overlapping outer mounting groove at floating seal is provided with sealing ring；Sealing ring is installed between top connection and body；Sealing ring is installed between lower contact and body。
33. hanging packer device according to claim 17, it is characterized in that the inner side and outer side that pawl overlaps has mounting groove and pawl in pawl set to overlap outer mounting groove respectively, in pawl overlaps, the upper and lower of mounting groove is separately installed with Sealing shield ring, and in pawl overlaps, the middle part of mounting groove is provided with sealing ring；The upper and lower overlapping outer mounting groove at pawl is separately installed with Sealing shield ring, and the middle part overlapping outer mounting groove at pawl is provided with sealing ring；Have mounting groove and floating seal in floating seal set to overlap outer mounting groove respectively in the inner side and outer side of floating seal set, in floating seal overlaps, the upper and lower of mounting groove is separately installed with Sealing shield ring, and in floating seal overlaps, the middle part of mounting groove is provided with sealing ring；The upper and lower overlapping outer mounting groove at floating seal is separately installed with Sealing shield ring, and the middle part overlapping outer mounting groove at floating seal is provided with sealing ring；Sealing ring is installed between top connection and body；Sealing ring is installed between lower contact and body。
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| CN201410047571.0A CN103790547B (en) | 2014-02-11 | 2014-02-11 | hanging packer device |
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| CN201410047571.0A CN103790547B (en) | 2014-02-11 | 2014-02-11 | hanging packer device |
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| CN103790547B true CN103790547B (en) | 2016-06-22 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107355196B (en) * | 2017-08-14 | 2019-05-10 | 中国石油集团渤海钻探工程有限公司 | A kind of expandable screen segmentation bottom packer |
| CN109372464A (en) * | 2018-12-19 | 2019-02-22 | 中国石油大学(北京) | Packer |
| CN110593802B (en) * | 2019-09-06 | 2022-03-04 | 中国石油集团西部钻探工程有限公司 | Metal sealing packing device |
| CN110578480B (en) * | 2019-09-24 | 2022-03-04 | 中国石油集团西部钻探工程有限公司 | Reliable hydraulic centralizer |
| CN110593778B (en) * | 2019-09-24 | 2021-01-05 | 中国石油集团西部钻探工程有限公司 | Self-opening hydraulic centralizer |
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| RU2346142C1 (en) * | 2007-07-06 | 2009-02-10 | Открытое акционерное общество "Татнефть" им. В.Д. Шашина | Plug packer |
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Effective date of registration: 20201106 Address after: 100120 Beijing Xicheng District six laying Kang Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Xibu Drilling Engineering Co.,Ltd. Address before: 830026 science and technology management division, West drilling and Drilling Engineering Research Institute, No. 326, South Central Road, Urumqi, the Xinjiang Uygur Autonomous Region Patentee before: CNPC Xibu Drilling Engineering Co.,Ltd. |
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